I have been testing a new tracker that closely resembles Voluum. The user interface is nice and campaigns are easy to set up. With Voluum costing upwards of $99 a month and Prosper 202 now no longer free this tracker could be an option for newer affiliates.
I am not an affiliate or agent for them so I will not post a link here but check out Newbidder!
So far I am very impressed.